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Cassiopeia A

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Cassiopeia A (Cas A) is a supernova remnant (SNR) in the constellation Cassiopeia and the brightest extrasolar radio source in the sky at frequencies above 1 GHz. [1]

48 relations: Aerobee, Astronomer Royal, Astronomical radio source, Astronomy & Astrophysics, BBC News, Cassiopeia (constellation), Chandra X-ray Observatory, Charles II of England, Circumpolar constellation, Constellation, Cosmic dust, Cygnus A, Declination, Fahrenheit, Francis Graham-Smith, G1.9+0.3, Green Catalogue of Supernova Remnants, Hertz, Hubble Space Telescope, International Astronomical Union, Iron, Jansky, John Flamsteed, Kepler's Supernova, Light echo, List of supernova remnants, Long Michelson Interferometer, Martin Ryle, Milky Way, Minute and second of arc, Nature (journal), Neutron star, Orders of magnitude (temperature), Phosphorus, Red supergiant star, Right ascension, Science (journal), SN 1885A, Sounding rocket, Spitzer Space Telescope, Star, Supernova, Supernova nucleosynthesis, Supernova remnant, Third Cambridge Catalogue of Radio Sources, Type II supernova, University of Cambridge, 3 Cassiopeiae.


The Aerobee rocket was a small (8 m) unguided suborbital sounding rocket used for high atmospheric and cosmic radiation research in the United States in the 1950s.

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Astronomer Royal

Astronomer Royal is a senior post in the Royal Households of the United Kingdom.

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Astronomical radio source

Astronomical radio sources are objects in outer space that emit strong radio waves.

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Astronomy & Astrophysics

Astronomy & Astrophysics is a peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics.

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BBC News

BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs.

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Cassiopeia (constellation)

Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.

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Chandra X-ray Observatory

The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999.

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Charles II of England

Charles II (29 May 1630 – 6 February 1685) was king of England, Scotland and Ireland.

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Circumpolar constellation

In astronomy, a circumpolar constellation is a constellation (group of stars) that never sets below the horizon, as viewed from a location on Earth.

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A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

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Cosmic dust

Cosmic dust, also called extraterrestrial dust or space dust, is dust which exists in outer space, as well as all over planet Earth.

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Cygnus A

Cygnus A (3C 405) is a radio galaxy, and one of the strongest radio sources in the sky.

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In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.

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The Fahrenheit scale is a temperature scale based on one proposed in 1724 by Dutch-German-Polish physicist Daniel Gabriel Fahrenheit (1686–1736).

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Francis Graham-Smith

Sir Francis Graham-Smith (born 25 April 1923) is a British astronomer.

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G1.9+0.3 is a supernova remnant (SNR) in the constellation of Sagittarius.

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Green Catalogue of Supernova Remnants

The Green Catalogue of Supernova Remnants lists supernova remnants (SNR) within the Milky Way Galaxy.

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The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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Hubble Space Telescope

The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.

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International Astronomical Union

The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.

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Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.

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The jansky (symbol Jy) is a non-SI unit of spectral flux density, or spectral irradiance, used especially in radio astronomy.

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John Flamsteed

John Flamsteed FRS (19 August 1646 – 31 December 1719) was an English astronomer and the first Astronomer Royal.

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Kepler's Supernova

SN 1604, also known as Kepler's Supernova, Kepler's Nova or Kepler's Star, was a supernova of Type Ia that occurred in the Milky Way, in the constellation Ophiuchus.

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Light echo

Reflected light following path B arrives shortly after the direct flash following path A but before light following path C. B and C have the same apparent distance from the star as seen from Earth. A light echo is a physical phenomenon caused by light reflected off surfaces distant from the source, and arriving at the observer with a delay relative to this distance.

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List of supernova remnants

This is a list of observed supernova remnants.

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Long Michelson Interferometer

The Long Michelson Interferometer was a radio telescope interferometer built by Martin Ryle and co-workers in the late 1940s beside the rifle range to the west of Cambridge, England.

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Martin Ryle

Sir Martin Ryle (27 September 1918 – 14 October 1984) was an English radio astronomer who developed revolutionary radio telescope systems (see e.g. aperture synthesis) and used them for accurate location and imaging of weak radio sources.

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Milky Way

The Milky Way is the galaxy that contains our Solar System.

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Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.

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Nature (journal)

Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.

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Neutron star

A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.

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Orders of magnitude (temperature)

Most ordinary human activity takes place at temperatures of this order of magnitude.

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Phosphorus is a chemical element with symbol P and atomic number 15.

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Red supergiant star

Red supergiants are stars with a supergiant luminosity class (Yerkes class I) of spectral type K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous.

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Right ascension

Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.

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Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

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SN 1885A

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Sounding rocket

A sounding rocket, sometimes called a research rocket, is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight.

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Spitzer Space Telescope

The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.

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A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

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A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.

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Supernova nucleosynthesis

Supernova nucleosynthesis is a theory of the nucleosynthesis of the natural abundances of the chemical elements in supernova explosions, advanced as the nucleosynthesis of elements from carbon to nickel in massive stars by Fred Hoyle in 1954.

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Supernova remnant

A supernova remnant (SNR) is the structure resulting from the explosion of a star in a supernova.

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Third Cambridge Catalogue of Radio Sources

The Third Cambridge Catalogue of Radio Sources (3C) is an astronomical catalogue of celestial radio sources detected originally at 159 MHz, and subsequently at 178 MHz.

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Type II supernova

A Type II supernova (plural: supernovae or supernovas) results from the rapid collapse and violent explosion of a massive star.

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University of Cambridge

The University of Cambridge (informally Cambridge University)The corporate title of the university is The Chancellor, Masters, and Scholars of the University of Cambridge.

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3 Cassiopeiae

3 Cassiopeiae (3 Cas) is an unidentified star in the Cassiopeia constellation catalogued by English astronomer John Flamsteed.

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Redirects here:

3C 461, 3C461, 3c461, Cas A, Cas-A, Sn 1680.


[1] https://en.wikipedia.org/wiki/Cassiopeia_A

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